FREE Lean Six Sigma Green Belt DMAIC: Measure Phase Tools Questions and Answers

Question 1

A project team is trying to determine if their measurement system is adequate for a project. They have several operators measure the same set of parts multiple times. What tool are they using and what are they primarily trying to assess?

Accepted Answer

Gage R&R study; to evaluate the repeatability and reproducibility of the measurement system.

Answer

A Gage Repeatability and Reproducibility (Gage R&R) study is a Measurement System Analysis (MSA) technique that assesses the precision of a measurement system. It quantifies the amount of variation contributed by the measurement equipment (repeatability) and the operators (reproducibility) to determine if the system is suitable for its intended use.

Question 2

Which of the following is the MOST important reason for creating a detailed Data Collection Plan during the Measure phase?

Accepted Answer

To provide a structured and consistent approach to gathering valid data relevant to the project metrics.

Answer

A Data Collection Plan is a crucial tool created in the Measure phase to ensure that the data collected is reliable, relevant, and gathered consistently. It outlines what will be measured, how it will be measured, by whom, and where, thereby ensuring the integrity of the data used to establish a baseline and for later analysis.

Question 3

A team calculates a process capability index (Cp) of 1.5 and a process capability ratio (Cpk) of 0.8. What does this combination of values indicate about the process?

Accepted Answer

The process has low variation but is not centered between the specification limits.

Answer

Cp measures the potential capability, indicating if the process spread is narrow enough to fit within the specification limits. A Cp of 1.5 is greater than the common threshold of 1.33, suggesting the process has low variation (good potential). Cpk measures the actual capability, accounting for how centered the process is. A Cpk below 1.0 (like 0.8) indicates the process is not centered and is producing defects because it's too close to one of the specification limits.

Question 4

To ensure that all team members collecting data on 'customer satisfaction' have the same understanding of what constitutes a 'satisfied' versus an 'unsatisfied' customer, the team should develop a(n):

Accepted Answer

Operational Definition

Answer

An operational definition is a clear, precise, and detailed description of a measure. It removes ambiguity and ensures that different people collecting data will do so consistently, which is critical for obtaining reliable data in the Measure phase.

Question 5

A key output of the Measure phase is establishing the current process performance before any improvements are made. What is this output officially called?

Accepted Answer

The Process Baseline

Answer

The primary goal of the Measure phase is to collect data to quantify the current state of the process. This quantified current state is known as the process baseline, which serves as the starting point against which all future improvements will be compared.

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Practice Test

FREE Lean Six Sigma Green Belt DMAIC: Measure Phase Tools Questions and Answers